APA (7th ed.) Citation

Safari Tech Books Online, Walker, G. S. A., & Kern, H. C. (2001). IT Problem Management (1st edition.). Prentice Hall PTR.

Chicago Style (17th ed.) Citation

Safari Tech Books Online, Gary S Author Walker, and Harris Contributor Kern. IT Problem Management. 1st edition. [Place of publication not identified]: Prentice Hall PTR, 2001.

MLA (9th ed.) Citation

Safari Tech Books Online, et al. IT Problem Management. 1st edition. Prentice Hall PTR, 2001.